EP3282572B1 - Procédé et dispositif de commande pour un circuit comportant une branche de pont d'un commutateur - Google Patents
Procédé et dispositif de commande pour un circuit comportant une branche de pont d'un commutateur Download PDFInfo
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- EP3282572B1 EP3282572B1 EP17184883.1A EP17184883A EP3282572B1 EP 3282572 B1 EP3282572 B1 EP 3282572B1 EP 17184883 A EP17184883 A EP 17184883A EP 3282572 B1 EP3282572 B1 EP 3282572B1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/083—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the ignition at the zero crossing of the voltage or the current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
- H02M1/342—Active non-dissipative snubbers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Definitions
- a power electronic device is orientated to miniaturization, lightweight, high efficiency, and low cost.
- a power semiconductor device is in a hard switching operation state, and there is a larger overlapping area between voltage and current, causing problems such as large switch loss, electromagnetic interference noise, ringing and the like, thus resulting in high cost, huge volume and low efficiency of the systems. If high performance is desired to be available, high cost is needed.
- the semiconductor industry has developed rapidly, but high-performance devices have not yet been used in large scale, so the study on soft switching circuit topology is still a selection for most of power supply manufactures to improve product competitiveness.
- US 2011/109162 has disclosed a converter to supply an AC voltage and current from three DC voltages comprising two switching units provided with first switching means connected between an input and a switching output, said converter comprising, for each switching unit, second switching means connected between said switching unit and a modulated signal output, and a switching aid circuit, said converter comprising control means acting on the second switching means associated with the switching unit that is connected to the voltage input of opposite sign to the sign of said AC voltage to establish turn-off of said second switching means when said AC voltage and said AC current are of opposite signs.
- An uninterruptible power supply comprising the converter described above.
- the present invention provides a control method according to claim 1 and a device according to claim 6 for a circuit with a bridge arm of a switch, so as to reduce system loss and noise, thus improving efficiency.
- the invention is defined by a method according to claim 1 and by a device according to claim 6.
- Advantageous aspects of the invention are defined in the dependent claims.
- step S1 at a time when current is completely transferred from a main switch circuit comprising the at least two bridge arms of the switch in the circuit to an auxiliary switch circuit comprising the auxiliary switch in the circuit, the main switches set at the same position of individual bridge arms of the switch are controlled to be simultaneously turned on; in the step S2, at a time when current is completely transferred from the auxiliary switch circuit to the main switch circuit, the auxiliary switch is turned off.
- the magnitude of ⁇ t1 and ⁇ t2 depends on resonance energy, operating frequency, and switching speed.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Claims (7)
- Procédé de commande d'un circuit,
le circuit comprenant
une capacité de bus comprenant une borne positive, une borne négative et un point neutre,
au moins deux branches de pont connectées entre la borne positive et la borne négative de la capacité de bus,
dans lequel chaque branche de pont est une branche de pont NPC, qui comprend un premier commutateur principal, un deuxième commutateur principal, un troisième commutateur principal, et un quatrième commutateur principal connectés en série entre les bornes positive et négative de la capacité de bus et une première diode et une seconde diode connectées respectivement entre le point de connexion du premier commutateur et du deuxième commutateur et le point neutre de la capacité de bus et entre le point de connexion du troisième commutateur et du quatrième commutateur et le point neutre de la capacité de bus,
un commutateur auxiliaire (Up.Aux1, Down.Aux1) qui aide à la commutation de commutateurs principaux (R.up1, R.up2, R.down1, R.down2, S.up1, S.up2, S.downl, S.down2, T.up1, T.up2, T.down1, T.down2) fournis dans les branches de pont, de diodes auxiliaires et d'une bobine d'induction (Tx.up.Aux, Tx.down.Aux),
le commutateur auxiliaire est connecté d'un côté à la borne positive de la capacité de bus et de l'autre côté à un point de connexion de la bobine d'induction et d'une première diode auxiliaire,
la bobine d'induction est connectée d'un côté au point neutre de la capacité du bus par le biais de la première diode auxiliaire, et de l'autre côté par le biais de diodes auxiliaires aux points de connexion entre le premier commutateur et le deuxième commutateur de la branche de pont,
caractérisé en ce que le procédé de commande comprend des étapes de :S1. après la commande du commutateur auxiliaire (Up.Aux1, Down.Aux1) en position d'activation pendant une première période de temps, commande des commutateurs principaux (R.up1, R.down1, S.up1, S.down1, T.up1, T.down1) réglés à une même position des branches de pont et connectés à la capacité de bus pour les activer simultanément ; etS2. après une seconde période de temps suivant l'instant auquel les commutateurs principaux (R.upl, R.down1, S.up1, S.down1, T.up1, T.down1) réglés à la même position des branches de pont et connectés à la capacité de bus sont activés simultanément, désactivation du commutateur auxiliaire (Up.Aux1, Down.Aux1). - Procédé de commande selon la revendication 1, caractérisé en ce que
à l'étape S1, à un instant auquel le courant est complètement transféré d'un circuit de commutateur principal comprenant les au moins deux branches de pont dans le circuit à un circuit de commutateur auxiliaire comprenant le commutateur auxiliaire (Up.Aux1, Down.Aux1) et 11 bobine d'induction (Tx.up.Aux, Tx.down.Aux) dans le circuit, les commutateurs principaux (R.up1, R.downl, S.up1, S.down1, T.up1, T.down1) réglés à la même position de branches de pont individuelles et connectés à une capacité de bus sont commandés pour être activés simultanément ;
à l'étape S2, à un instant auquel le courant est complètement transféré du circuit de commutateur auxiliaire au circuit de commutateur principal, le commutateur auxiliaire est désactivé. - Procédé de commande selon l'une quelconque des revendications 1-2, caractérisé en ce que
des signaux de commande du commutateur principal (R.up1, R.up2, R.down1, R.down2, S.up1, S.up2, S.down1, S.down2, T.up1, T.up2, T.down1, T.down2) des branches de pont et du commutateur auxiliaire (Up.Aux1, Down.Aux1) sont formés en modulant un signal de porteuse,
avant l'étape S1, le procédé de commande comprenant en outre une étape de :détection qu'un bord effectif du signal de porteuse apparaît ou non, et dans l'affirmative, commencement de la réalisation de l'étape S1,dans lequel le signal de porteuse est une onde triangle rectangle, le bord effectif étant un bord montant de l'onde triangle rectangle. - Procédé de commande selon l'une quelconque des revendications 1-3, caractérisé en ce que le circuit est un convertisseur de commutation douce.
- Procédé de commande selon l'une quelconque des revendications 1-4, caractérisé en ce que le circuit est un circuit C.A./C.C. ou C.C./C.A.
- Onduleur, comportant :un circuit, le circuit comprenantune capacité de bus comprenant une borne positive, une borne négative et un point neutre,au moins deux branches de pont connectées entre la borne positive et la borne négative de la capacité de bus,dans lequel chaque branche de pont est une branche de pont NPC, qui comprend un premier commutateur principal, un deuxième commutateur principal, un troisième commutateur principal, et un quatrième commutateur principal connectés en série entre les bornes positive et négative de la capacité de bus et une première diode et une seconde diode connectées respectivement entre le point de connexion du premier commutateur et du deuxième commutateur et le point neutre de la capacité de bus et entre le point de connexion du troisième commutateur et du quatrième commutateur et le point neutre de la capacité de bus,un commutateur auxiliaire (Up.Aux1, Down.Aux1) qui aide à la commutation de commutateurs principaux (R.up1, R.up2, R.down1, R.down2, S.up1, S.up2, S.down1, S.down2, T.up1, T.up2, T.down1, T.down2) fournis dans les branches de pont, de diodes auxiliaires et d'une bobine d'induction (Tx.up.Aux, Tx.down.Aux),le commutateur auxiliaire est connecté d'un côté à la borne positive de la capacité de bus et de l'autre côté à un point de connexion de la bobine d'induction et d'une première diode auxiliaire,la bobine d'induction est connectée d'un côté au point neutre de la capacité du bus par le biais de la première diode auxiliaire, et de l'autre côté par le biais de diodes auxiliaires aux points de connexion entre le premier commutateur et le deuxième commutateur de la branche de pont, etun dispositif de commande configuré pour :après la commande du commutateur auxiliaire (Up.Aux1, Down.Aux1) en position d'activation pendant une première période de temps, commander les commutateurs principaux (R.up1, R.down1, S.up1, S.down1, T.up1, T.down1) réglés à une même position des branches de pont et connectés à la capacité de bus pour les activer simultanément ; etaprès une seconde période de temps suivant l'instant auquel les commutateurs principaux (R.up1, R.down1, S.up1, S.down1, T.up1, T.down1) réglés à la même position des branches de pont et connectés à la capacité de bus sont activés simultanément, désactiver le commutateur auxiliaire (Up.Aux1, Down.Aux1).
- Onduleur selon la revendication 6, caractérisé en ce que le dispositif de commande est configuré en outre pour :à un instant auquel le courant est complètement transféré d'un circuit de commutateur principal comprenant les au moins deux branches de pont dans le circuit à un circuit de commutateur auxiliaire comprenant le commutateur auxiliaire (Up.Aux1, Down.Aux1) et la bobine d'induction (Tx.up.Aux, Tx.down.Aux) dans le circuit, commander les commutateurs principaux (R.up1, R.down1, S.up1, S.down1, T.up1, T.down1) réglés à la même position de branches de pont individuelles et connectés à une capacité de bus pour les activer simultanément ; età un instant auquel le courant est complètement transféré du circuit de commutateur auxiliaire au circuit de commutateur principal, désactiver le commutateur auxiliaire (Up.Aux1, Down.Aux1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610643264.8A CN107707139B (zh) | 2016-08-08 | 2016-08-08 | 一种具有开关桥臂的电路的控制方法及装置 |
Publications (2)
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EP3282572A1 EP3282572A1 (fr) | 2018-02-14 |
EP3282572B1 true EP3282572B1 (fr) | 2021-01-20 |
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EP17184883.1A Active EP3282572B1 (fr) | 2016-08-08 | 2017-08-04 | Procédé et dispositif de commande pour un circuit comportant une branche de pont d'un commutateur |
Country Status (3)
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US (1) | US10601303B2 (fr) |
EP (1) | EP3282572B1 (fr) |
CN (1) | CN107707139B (fr) |
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CN110661321B (zh) * | 2018-06-29 | 2022-03-15 | 比亚迪股份有限公司 | 电动汽车的车载充电器及其控制方法、电动汽车 |
CN110649831B (zh) * | 2019-05-10 | 2021-04-13 | 阳光电源股份有限公司 | 多电平逆变电路的关机封波控制方法及其应用装置 |
CN112003490B (zh) * | 2020-07-31 | 2021-06-04 | 北京金风科创风电设备有限公司 | 三电平变流器的功率组件及三电平变流器 |
CN114019272B (zh) * | 2021-10-18 | 2023-05-16 | 清华大学 | 一种换流器测试电路和测试方法 |
CN116470820A (zh) * | 2022-01-12 | 2023-07-21 | 台达电子工业股份有限公司 | 三相功率转换器的输出电流的箝位控制方法 |
CN115566882B (zh) * | 2022-11-09 | 2023-03-21 | 浙江飞旋科技有限公司 | 三电平逆变电路开关信号的逻辑处理装置及方法 |
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SE511219C2 (sv) * | 1998-01-27 | 1999-08-23 | Asea Brown Boveri | Omriktare där klampningsdioderna ersatts av en aktiv klampningskrets |
US6534949B2 (en) | 2001-03-29 | 2003-03-18 | General Electric Company | Motor drive converter and method with neutral point drift compensation |
FR2952483B1 (fr) * | 2009-11-06 | 2012-12-07 | Mge Ups Systems | Dispositif convertisseur et alimentation sans interruption equipee d'un tel dispositif. |
CN101783608A (zh) * | 2010-03-16 | 2010-07-21 | 浙江大学 | 最小电压有源箝位三相并网逆变器 |
US8929114B2 (en) * | 2011-02-24 | 2015-01-06 | Virginia Tech Intellectual Properties, Inc. | Three-level active neutral point clamped zero voltage switching converter |
EP2590312A1 (fr) * | 2011-11-04 | 2013-05-08 | Alstom Technology Ltd | Convertisseur de source de tension avec topologie clampée en neutre modifiée et procédé de fonctionnement d'un tel convertisseur |
CN103312187B (zh) * | 2012-03-09 | 2016-02-03 | 台达电子工业股份有限公司 | 一种变流器系统 |
CN103001523B (zh) * | 2012-10-31 | 2015-07-08 | 上海交通大学 | 无附加电压零电压开关储能桥式逆变器及调制方法 |
CN102983767B (zh) * | 2012-10-31 | 2016-01-13 | 上海交通大学 | 低附加电压零电压开关储能桥式逆变器及调制方法 |
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2016
- 2016-08-08 CN CN201610643264.8A patent/CN107707139B/zh active Active
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2017
- 2017-08-01 US US15/666,193 patent/US10601303B2/en active Active
- 2017-08-04 EP EP17184883.1A patent/EP3282572B1/fr active Active
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Also Published As
Publication number | Publication date |
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EP3282572A1 (fr) | 2018-02-14 |
CN107707139A (zh) | 2018-02-16 |
US20180041109A1 (en) | 2018-02-08 |
CN107707139B (zh) | 2020-05-01 |
US10601303B2 (en) | 2020-03-24 |
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